The investigation of the mind has been one of the major concerns of our philosophical tradition and is still a dominant subject in modern philosophy and science. Many philosophers in the scientific tradition want to solve the "puzzles of the mind," but believe the "puzzles" to be puzzles of the brain. So, whilst the former think of the mental as something of its own kind, the latter deny that philosophy of mind has to do with anything else but the brain. Philosophers also believe that reduction is the way to go. Maybe the mental is brain-dependent and hence reducible to the physical, in some way. This volume collects contributions that comprise each view point, and incorporates articles by William Bechtel, Jerry Fodor, Jaegwon Kim, Jolle Proust, and Patrick Suppes.